// 客户端导出工具 — CSV / JSON 下载 // Logan.Li

export function exportAsCSV(filename: string, data: Record<string, unknown>[]): void {
  if (data.length === 0) return;
  const headers = Object.keys(data[0]);
  const csv = [
    headers.join(','),
    ...data.map((row) => headers.map((h) => JSON.stringify(row[h] ?? '')).join(',')),
  ].join('\n');
  const blob = new Blob(['\ufeff' + csv], { type: 'text/csv;charset=utf-8;' });
  const a = document.createElement('a');
  a.href = URL.createObjectURL(blob);
  a.download = filename;
  a.click();
  URL.revokeObjectURL(a.href);
}

export function exportAsJSON(filename: string, data: unknown[]): void {
  const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
  const a = document.createElement('a');
  a.href = URL.createObjectURL(blob);
  a.download = filename;
  a.click();
  URL.revokeObjectURL(a.href);
}